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Finding the Fourth Proportional to 225,895.94, 311,684.05 and 135,217.43

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Solution

The fourth proportional to 225,895.94, 311,684.05 and 135,217.43 is: 186,568.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,895.94 : 311,684.05 = 135,217.43 : x
  2. Step 2: Convert to fraction form
    225,895.94/311,684.05 = 135,217.43/x
  3. Step 3: Cross multiply
    225,895.94x = 311,684.05 × 135,217.43
  4. Step 4: Simplify right side
    225,895.94x = 42,145,116,212.99
  5. Step 5: Solve for x
    x = 42,145,116,212.99/225,895.94
  6. Step 6: Final answer
    x = 186,568.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.